Abstract

While feedback of the grasping force is necessary to manipulate objects skillfully, most Virtual Reality systems do not provide such feedback. Grasping an object is often reduced to pushing a button on the interface. This paper presents the design and realization of a haptic forceps for microsurgery training, and its integration on a haptic 6DOF DELTA device. Psychophysical experiments were first conducted to determine the critical factors for the design. The haptic forceps has similar dimensions as a microsurgery forceps and integrates two active degrees of freedom for rotation about its axis as well as opening and closing. The transformation of the force/torque from the forceps tip to the haptic device TCP, necessary to compute the desired force/torque at the forceps tip, was derived and implemented. Preliminary experiments emonstrate the potential of this haptic forceps in a VR microsurgery trainer.

Details

Actions